.ctrler {border-radius: 50%;width: 40px;height: 40px;background-color: rgba(0,0,0,0.4);position: relative;left: 50%;top: 50%;z-index: 555;margin-left: -20px;margin-top: -20px;}
.ring {border-radius: 50%;width: 80px;height: 80px;background-color: rgba(112,128,144,0.3);position: absolute;left: 50px;z-index: 555;bottom: 50px;}
.game-box {width: 100%;background-color: #FFF8DC;}
.role {position: relative;width: 25px;height: 25px;background-size: 24px 24px;}
.wall {position: absolute;top: 40px;margin: 0;width: 10%;height: 100px;background-color: #778899;}